OOP PDF: Override printing for MimeHandlerViewContainers.

components/printing/renderer/print_web_view_helper.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_PRINTING_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #define COMPONENTS_PRINTING_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 66 matching lines @@
                                  int routing_id) = 0;
 
     // Returns the element to be printed. Returns a null WebElement if
     // a pdf plugin element can't be extracted from the frame.
     virtual blink::WebElement GetPdfElement(blink::WebLocalFrame* frame) = 0;
 
     // Used to know whether the content to print could be nested in an iframe.
     virtual bool IsOutOfProcessPdfEnabled() = 0;
 
     virtual bool IsPrintPreviewEnabled() = 0;
+
+    // Returns true if printing is overridden and the default behavior should be
+    // skipped for |frame|.
+    virtual bool OverridePrint(blink::WebLocalFrame* frame) = 0;
   };
 
   PrintWebViewHelper(content::RenderView* render_view,
                      scoped_ptr<Delegate> delegate);
   ~PrintWebViewHelper() override;
 
   // Disable print preview and switch to system dialog printing even if full
   // printing is build-in. This method is used by CEF.
   static void DisablePreview();
 
@@ skipping 393 matching lines @@
   base::Closure on_stop_loading_closure_;
 
   base::WeakPtrFactory<PrintWebViewHelper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };
 
 }  // namespace printing
 
 #endif  // COMPONENTS_PRINTING_RENDERER_PRINT_WEB_VIEW_HELPER_H_